Date: Sat, 06 Mar 2004 02:04:10 -0800 From: Rishi Chopra <rchopra@cal.berkeley.edu> To: Chuck McManis <cmcmanis@mcmanis.com> Cc: freebsd-questions@freebsd.org Subject: Re: Problems (Still) Mounting CDROM Message-ID: <4049A21A.3070309@cal.berkeley.edu> In-Reply-To: <6.0.0.22.2.20040305223628.02496ec8@66.125.189.29> References: <40496EBE.7050706@cal.berkeley.edu> <6.0.0.22.2.20040305223628.02496ec8@66.125.189.29>
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What if the drive is recognized by the BIOS? Chuck McManis wrote: > As far as your kernel is concerned there is no CDROM drive attached to it. > > You should see something like: > > atapci0: <Intel ICH4 ATA100 controller> port > 0xf000-0xf00f,0-0x3,0-0x7,0-0x3,0-0x7 irq 0 at device 31.1 on pci0 > ata0: at 0x1f0 irq 14 on atapci0 > ata1: at 0x170 irq 15 on atapci0 > ... snip ... > sio1: type 16550A > ppc0: parallel port not found. > ad0: DMA limited to UDMA33, non-ATA66 cable or device > ad0: 76319MB <WDC WD800JB-00CRA1> [155061/16/63] at ata0-master UDMA33 > acd0: CDROM <ATAPI 44X CDROM> at ata1-master PIO4 > ... snip ... > > Note that the last line identifies the CDROM. Now the most common cause > of this problem is that the CDROM is set as a "SLAVE" on the ATA bus and > there is no master on that bus. Or sometimes its set as Master w/Slave > Present and its waiting for the slave to ack before it does. Either way, > its one of (in order of likelyness): > > drive is mis-jumpered > drive is mis-cabled > drive is dead > > HTH > --Chuck > > -- Rishi Chopra http://www.ocf.berkeley.edu/~rchopra
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